Henri maurice Men's Thermal Underwear Tights Leggings Base Layer Compression Pants Black PSM Thermal effect / temperature preserved /moisture management with Cotna and Aerowarm Napping fabric Air bound in the aerowarm fabric by Double Layer fabric improves thermal effect for extreme cold weather condition It makes a nice and pleasant condition for exercises due to its super light spandex which is soft, wearable, flexible Spandex with high-elasticity allows the sweat to be quickly absorbed and dried Perfect fit to the body - high quality product Made in Korea (Korea fabric not in China)